# -*- coding: UTF-8 -*-
def area(width, heigth):
    return width * heigth;

def print_welcome(name):
    print("Welcome ", name)

if __name__ == "__main__":
    print("内部调用")
    print_welcome("WuQiupeng")
    w = 4
    h = 5
    print("width = " , w, " height = ", h, " area = ", area(w, h))
else:
    print("外部调用")